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Posted to issues@calcite.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2019/03/04 14:31:00 UTC

[jira] [Updated] (CALCITE-2886) Simplification of AND expressions should push negations earlier

     [ https://issues.apache.org/jira/browse/CALCITE-2886?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated CALCITE-2886:
------------------------------------
    Labels: pull-request-available  (was: )

> Simplification of AND expressions should push negations earlier
> ---------------------------------------------------------------
>
>                 Key: CALCITE-2886
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2886
>             Project: Calcite
>          Issue Type: Improvement
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>              Labels: pull-request-available
>
> * currently simplification decomposes the AND operands
> * simplifies all operands
> * runs main simplification
> * (re) simplifies all operands which are negated
> Idea is to make the recursion as a first step; which could also push negation further down; and skip the simplification at end completely - as its not connected to a structural change.



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